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Dualband parasitic metamaterial square microstrip patch antenna design
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In this paper, dualband parasitic square microstrip patch antenna loaded with metamaterial has been reported. Metamaterials exhibit qualitatively new electromagnetic response functions that cannot be found in nature. The inclusion of these structures allows simultaneous operation over several frequencies. Stacking of the patches increases the overall performance of the antenna. The antenna is designed to function in two bands. The antenna has two working frequency bands and its centre frequencies are 1.7 GHz and 1.76 GHz. It is applicable for several wireless applications. Design results are obtained by high frequency structure simulator (HFSS), which is used for simulating microwave passive components.
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... Equations (18)(19)(20)(21)(22) show the permeability and permittivity equation for metamaterial transmission line [38][39][40][41]. Using these equations we can find out the metamaterial permittivity and permeability. ...
... The permittivity and permeability of the design can be calculated with the use of Equations (18)(19)(20)(21)(22)(23)(24). ...
We have introduced metamaterial superstrate in microstrip based radiating structure to increase its bandwidth. Split ring resonators are added as metmatrial metallic inclusion in superstrate of the conventional design. This changes the basic structure of the material. Material properties permittivity and permeability changed due to change in the structure. The change in its material properties enhances the bandwidth of the antenna. The antenna is meandered to achieve better performance at the edges which in a way improve the radiation path of the patch. Here the proposed antenna works on three bands in the range 3-8 GHz. Maximum 60% bandwidth is enhanced in the third band. The VSWR and Return loss (S 11) of the entire three bands is shown in the paper. The antenna works on 3.51 GHz, 4.86 GHz and 7.8 GHz. Design results are obtained by High Frequency Structure Simulator which is used for simulating microwave passive components.
... The stop band bandwidth in metamaterial transmission lines can be enhanced as the coupling between inter resonators is strengthened [18]. Introduction of artificial material components, such as SRRs in antennas to improve their performance, was investigated by many researchers in the past decade [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Antennas working on more than one frequency is the requirement in today's fast growing information bandwidth demands. ...
... Antennas working on more than one frequency is the requirement in today's fast growing information bandwidth demands. Dual band and multiband antennas have been designed with metamaterials [24][25][26]. Improvement in the gain [27][28], bandwidth [29][30] and reduction in size [31][32] are also features widely desirable in antenna design. Tuning the antenna performance can be achieved with the use of MEMS switches [33]. ...
... Optical radiating structure integrated with ring resonator [19], metamaterial structure [20], grating waveguide (GWG) of optical radiating structure [21] are several methods to enhance the performance of optical radiating structure. A unique interaction of light is carried out with rod shaped amorphous silicon scatterers by tapping into their resonant modes [22,23]. ...
In this manuscript, silicon nitride (Si3N4) waveguide loaded with silicon perturbations is proposed. The rectangular and diamond shape perturbations of silicon material are created in Silicon nitride waveguide placed over Silicon on insulator (SOI) substrate. The simulation results show that the proposed design is more efficient compared to the existing designs. We obtain the simulation results of the proposed design in terms of reflectance, transmittance, far-field radiation pattern and half power beam width (HPBW). Our results lead to SOI-based optical radiating structure design in the third and fourth window of optical communication. The efficiency of the radiating structure is increased by introducing circular and diamond shape silicon perturbation in the waveguide. The directive and efficient response of optical radiating structure designs are applicable in medical imaging and sensing.
... Metamaterials are the artificial materials not available in nature having properties like negative permittivity and permeability which natural materials don't have [4]. The metamaterial used as a substrate exhibits large bandwidth and high gain due to the material property [5][6][7]. In Negative Index Metamaterial (NIM) if both permittivity and permeability are negative then that is called double negative material (DNG) [8]. ...
In this paper, a miniature improved gain Circular Patch Antenna (CPA) is reported. An array of Circular Split Ring Resonators (CSRRs) is loaded into a circular patch to transfigure the surface current distributions leading to miniaturization and significant gain enhancement. To obtain a bi-conical beam, the antenna is operated at Higher Order Mode (HOM). The HOM is excited by suitably selecting the feeding location. The unit cell of the CSRR is analyzed and the permittivity of the CSRRs loaded antenna structure is extracted using Scattering Parameter Inversion (SPI) method. The proposed antenna operates in 5.2 GHz band and built on a thin (0.254 mm) RT/Duroid 5880 substrate thus, flexible in nature. The bending analysis is performed showing a natural frequency shift. To validate the proposed design, the prototype is fabricated showing good agreement amongst simulated and measured results is found. © 2018, International Journal of Intelligent Engineering and Systems.
... However, the use of metamaterials for improving antenna performance is widely explored by many research groups [8][9][10][11][12][13][14][15][16]. The use of metamaterials improve the bandwidth, gain and directivity of an antenna. ...
In this manuscript reconfigurable microstrip patch antenna loaded with switches is presented for gain enhancement. The patch antenna is loaded with three metamaterial Split Ring Resonator (SRR) to improve the performance. Multiple switches are used for gain enhancement of microstrip patch antenna. The conventional microstrip patch antenna is compared with different switching cases (all switches on, all switches off, two switches on, metamaterial loaded patch with all switches on, all switches off, two switches on). The results of the proposed design is compared in form of reflection coefficient, gain, number of bands and bandwidth. The comparison of the proposed design is also made with previously published similar designs to show the proposed design enhancement. Gain enhancement is achieved by loading of metamaterial in patch for different switching states.
... Finally, the bandwidth of the usually narrowband leaky wave antennas have also been enhanced using metamaterials [7]. Indeed, metamaterial resonators are ideal platforms to be combined with compact microstrip antenna designs to improve their bandwidth and gain performance [8][9][10]. In this work, we propose new metamaterial-inspired compact multiband microstrip patch antenna designs with improved bandwidth and gain performance. ...
Bandwidth and gain are very importantparametersin the design of compact multiband microstrip patch antennas. In this manuscript, wedemonstrateways to improvethe bandwidth and gainperformance of microstrip patch antennasby embedding split ring resonatorsin theirstructures.These metamaterialelementsare artificially materials with unusual engineered properties notfound in nature. In particular, we have used multiple corrugated split ring resonatorsas metamaterial building blocksembedded in the microstrip patch antennageometry. The return loss and radiation pattern of the proposed multiband compact antennasiscalculated. Broadband performance is obtained combined with high gain for several of the proposed patch antennaconfigurations. The presented compact multiband antenna designs will be applicable to C-Bandlong-distance radio telecommunicationnetworks
... This drawback of microstrip antennas can be overcome by introducing different slots in patch. It also gives the benefits of size reduction [3][4][5][6][7][8][9][10][11]. With introducing slots in microstrip patch antenna it provides following advantage like, bandwidth of microstrip patch antenna is increased, efficiency is increased, improved VSWR, reduced size and increased gain [12][13]. ...
In this paper, reconfigurable high gain split ring resonator microstrip patch antenna is designed and analysed. The aim to design such type antenna is to achieve multiband application which is the demand of current technology in frequency reconfiguration within single antenna. Here microstrip patch antenna with rectangle shape of patch with patch dimension 11.6×11.6 mm 2 is analysed. The proposed design is tuned with two bands in the frequency range of 5-9 GHz depending on the geometric specification of antenna and the location of feed which can be used for multiband applications. Design results of VSWR, return loss (S 11), bandwidth and gain are shown in this paper which is obtained by high frequency structure simulator (HFSS) which is used for simulating microwave passive components.
... This drawback of microstrip antennas can be overcome by introducing different slots in patch. It also gives the benefits of size reduction [3][4][5][6][7][8][9][10][11]. With introducing slots in microstrip patch antenna it provides following advantage like, bandwidth of microstrip patch antenna is increased, efficiency is increased, improved VSWR, reduced size and increased gain [12][13]. ...
In this paper, reconfigurable high gain split ring resonator microstrip patch antenna is designed and analysed. The aim to design such type antenna is to achieve multiband application which is the demand of current technology in frequency reconfiguration within single antenna. Here microstrip patch antenna with rectangle shape of patch with patch dimension 11.6×11.6 mm 2 is analysed. The proposed design is tuned with two bands in the frequency range of 5-9 GHz depending on the geometric specification of antenna and the location of feed which can be used for multiband applications. Design results of VSWR, return loss (S11), bandwidth and gain are shown in this paper which is obtained by high frequency structure simulator (HFSS) which is used for simulating microwave passive components.
... Researchers have been working on metamaterial-based antenna designs for improvement in gain and bandwidth. [10][11][12] One of the ways to improve the bandwidth and gain is metamaterial superstrate loading in antennas. [7] Metamaterial inspired superstrate has been used to increase gain microstrip patch antenna. ...
We present microstrip patch antenna loaded with multiple split ring resonator substrate and superstrate. We analyze how the loading of split ring resonator superstrate and substrate can improve the bandwidth compared to the simple microstrip patch antenna and microstrip patch antenna loaded with split ring resonator superstrate. Another important observation is made for multiple split ring resonator loading in superstrate and substrate of microstrip patch antenna. The design is compared for two, three, and four-ring split ring resonator loading. The designs are also compared for different gap spacing between the rings. All three designs are compared for small gap and large gap between the rings. The design results in the form of reflection coefficient and bandwidth is presented in this manuscript. The design results are also compared with previously published designs.
In this letter, for the very first time, triple band rectangular patch antenna loaded with metamaterial has been reported. Maximum directivities demonstrated here for all the three bands are quite high in comparison with previously reported any kind of rectangular patch antenna. This unique triple band performance has been achieved with the help of newly produced TM0δ0 (3<δ<4) mode, symmetric slot loading and parasitic patch adjustment. Application of etched slot and parasitic patch in DPS (double positive)-metamaterial juxtaposed layer loaded antenna has been also demonstrated for the first time. Considering the quite satisfactory performance (S-parameter, radiation pattern and radiation efficiency) of this novel design, we expect that our proposed ideas will be very effective to design all these metamaterial loaded novel rectangular patch antennas.
The area of micro strip antennas has seen some inventive work in recent years and is currently one of the most dynamic fields of antenna theory. In this research, E-shape microstrip patch antenna has been designed for GPS application (GPS L2 1227.5 MHz band) and covering the 1200 to 1280 MHz frequency band. Simulated results for main parameters such as return loss, impedance bandwidth, radiation patterns and gains are also discussed herein. The study shows that modeling of such antennas, with simplicity in designing and feeding, can well meet GPS application. A designed antenna for the GPS application at the civilian GPS frequency (1227.5 MHz) has been simulated. Two parallel slots are incorporated to perturb the surface current path, introducing local inductive effect. This antenna is fed by a coaxial probe feeding.
In this work, we study the electromagnetic wave interaction with infinitely long cylindrical structures, such as cylindrical cavities, waveguides and open scatterers, made of a pair of DNG-DPS or a pair of ENG-MNG coaxial layers. In particular, we show that cylindrical DNG-DPS (and ENGMNG) cavities and waveguides with metallic walls may sustain propagating and resonant modes even when the radii of these shells are electrically very small. Moreover, in the case of open cylindrical structures, we show how the scattering coefficients may have a similar resonant behavior for specific ratios of radii of the two shells, in principle regardless of how thin the outer radius may be, when such conjugate pairs of materials are employed. These features may lead to interesting possibilities for the design of sub-wavelength resonant structures with interesting microwave applications.
Certain isotropic and anisotropic media with negative permittivity and/or permeability parameters have been recently labeled as BW-media due to their capability of supporting backward waves. Various suggestions for constructing composite materials realizing such media (also called metamaterials) have also been recently suggested. The present analysis considers guidance of waves in a slab of uniaxially anisotropic BW medium with at least one of the four medium parameters negative. It is shown that there exist odd and even TE and TM modes in such a slab capable of carrying energy in opposite directions inside and outside the slab with backward waves inside the slab.